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Add threading to VanityGen

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This commit is contained in:
catbref 2019-08-21 09:44:52 +01:00
parent 4330782bb7
commit f7c6978151
1 changed files with 76 additions and 24 deletions
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70
src/main/java/org/qora/VanityGen.java
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@ -4,6 +4,8 @@ import java.io.IOException;
import java.security.SecureRandom;
import java.security.Security;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.jsse.provider.BouncyCastleJsseProvider;
@ -16,16 +18,19 @@ import com.google.common.primitives.Bytes;
public class VanityGen {
public static void main(String argv[]) throws IOException {
if (argv.length != 1) {
System.err.println("Usage: Vanitygen <leading-chars>");
// From utils.Base58:
private static final String ALPHABET_STR = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
private static String prefix = null;
private static void usage() {
System.err.println("Usage: Vanitygen [-t threads] <leading-chars>");
System.err.println("Example: VanityGen Qcat");
return;
System.exit(1);
}
Security.insertProviderAt(new BouncyCastleProvider(), 0);
Security.insertProviderAt(new BouncyCastleJsseProvider(), 1);
private static class Generator implements Runnable {
public void run() {
Random random = new SecureRandom();
byte[] entropy = new byte[16];
@ -44,9 +49,56 @@ public class VanityGen {
PrivateKeyAccount account = new PrivateKeyAccount(null, hash);
if (account.getAddress().startsWith(argv[0]))
System.out.println(String.format("Address: %s, public key: %s, private key: %s, mnemonic: %s", account.getAddress(), Base58.encode(account.getPublicKey()), Base58.encode(hash), mnemonic));
if (!account.getAddress().startsWith(prefix))
continue;
System.out.println(String.format("Address: %s, public key: %s, private key: %s, mnemonic: %s",
account.getAddress(), Base58.encode(account.getPublicKey()), Base58.encode(hash), mnemonic));
System.out.flush();
}
}
}
public static void main(String argv[]) throws IOException {
if (argv.length == 0)
usage();
int threadCount = 1;
int argIndex = 0;
while (argIndex < argv.length) {
String arg = argv[argIndex++];
if (arg.equals("-t")) {
if (argIndex >= argv.length)
usage();
try {
threadCount = Integer.parseInt(argv[argIndex++]);
} catch (NumberFormatException e) {
usage();
}
continue;
}
if (prefix != null)
usage();
prefix = arg;
if (!prefix.matches("[" + ALPHABET_STR + "]+")) {
System.err.println("Only the following characters are allowed:\n" + ALPHABET_STR);
System.exit(1);
}
}
Security.insertProviderAt(new BouncyCastleProvider(), 0);
Security.insertProviderAt(new BouncyCastleJsseProvider(), 1);
ExecutorService executor = Executors.newFixedThreadPool(threadCount);
for (int ti = 0; ti < threadCount; ++ti)
executor.execute(new Generator());
}
}